Furnace-roof.



P. H. SUGRUE.

I FURNACE ROOF. APPLICATION FILED MAY 27, 1910.

Patented July 16, 1912/ 2 SHEETS-SHEET 1.

Me gna Lem-$50 Pas/now awe/M 91 ail-aw shame.

' Guam ya To all w7zom it may roofs or arches resulting in the loosening half:size brick.

UNITED STATES PATENT OFFICE;

FURNACE-ROOF.

. Specification of. Letters Patent.

Application filed May 27, 1910. Serial No. 563,757.

edge. The ribs 3 and 4.- correspond to the respective grooves. In this way I form wedging portions of different widths. .While two grooves and two ribs in each brick are nary purposes, yet in some instances the concern.- other longitudinal Be it known that- I, PATRICK H. SUGRUE, Washington, District of invented certain exact description of the invention such as brlcks may be of extrawidth-an equipped W1ll enable others skilled 1n the art to which with three grooves or ribs on its opposite It appertains to make and use the same. sides (see Fig. -5) but the number is imconsiderable difliculty has been experienced by the liability to collapse of the roofs or arches of furnaces employed in connect-ion with high pressure boilers. The intense heat frequently causes an appreciable vibratory motion in the n practice, an end de up of alternate full and half width bricks, the latter, which are shown at 5, '(Figs. 3 and 6) serving merely as spacers of the fire-bricks and the between the bricks of the first structure. I

The object of my invention is to obviate these difficulties and at the same time enable the roof to be built as close to the grate as desired, without danger of collapsing. And a further object is to so form the bricks or tiles collapse of the the interlocking therewith of the bricks of the next row, the full width bricks of the made up primarily of bricks of extra length as shown at 6 (Figs. 3 and 5) the bricks 0% normal size form the spacers. Either arrangement may be observed throughout the lug either un form or irregular, as COI1dlconstruction of the roof, and to close the ions may requlre. spaces between the projecting portions of he invention Wlll be hereinafter fully the bricks of the last row, bricks of a set forth and particularly pointed out in the c aims.

In the accompanying drawings, Figure- 1 is a sectional View of smaller size than those which project are employed for that purpose.

Assuming that the I een positioned, and an uneven or broken surface. 2 shows two bricks, with parts in dotted lines. Fig. 3 shows a series I ks are, pne at a time of bricks 1n plan View.

Wardly through the vertical passages between the opposed faces of th portions of the full width bricks of the first row. As each brick ward'ly, it will also move horizontal y until arrested by engagement with the longitudinal edge of the ribs 3 of Fig. 5 shows a larger brick. Fig. 6 shows a Fig. 7 shows a slight modication.

In carrying out my invention, I preferably make each brick or tile oblong, and but of little thickness; On one of the fiat sides I form two longitudinally extended, diagonal grooves l and 2 the bricks of the the opposite longitudinal edges of bricks Patented July 16, 1912.v

suificient for all ordi-.

a brick of the adjacent row If.

he same vertical plane will not be' bricks of the sec-' row of bricks may be e pro ecting moves downforming two their lower edges on Nhen, however,

d or broken lower edge of different plane the ribs 4 are caused to e ribs 3 to enter grooves 2, posed longitudina same vertical plane before the bricks w can travel t as shown in In Fig first of a of unstepped steps, and finally with their lower e tal planes. Any be observed, a merely reversing, one row relatively viously forme As before s ployed in co an arch plane. tain a steppe the gra in furnaces con boilers, and whi very high temperat tageous to b but heretofore it possible to bring tance because of intense heat. bricks of adjacent rows by arrangedribs and groov to have li rections un without danger of Practice has sure boilers accordance wi stant-ly operated fire with the arches. It wil diiferent wedges" grooves it is only necess bricks'of one ro other row to or more or'all the it is desire from the near nter grooves will be cause hich are b he distance 0 full and dotted lines,

series of stepped rows; then a series of unstep d es on uniform hor1zonof each row having diagonally arrange red arrangement may longitudinally extended grooveson one side change bei g d, the bricks of grooves, such ribs and grooves extending to those of the last prethroughout the length of each brick, a

cks may be emtraight root 01' h structure -wedge-like blocks s customary.

my invention wi in the art.

f the bricks he looking ons of different ssible for the long as their (1. In contated, the bri nstructing a s When emp a necessary nu will be required, as i The advantages 0 apparent to t will be seen th themselves tend to gagement rows, and h bricks to fall out o lateral supp sequenc te than has her structed to ob necessaril highly advane root close to the grate;

been practically im in the desired disereof by the ence it is impo orts are no ild the root much closer to been possible r high-pressure y maintain a destruction th interlocking of the diagonally llows the bricks ts in opposite did cold mited movemen der the action of heat an down the arch. strated that high preshaving arches constru th my invent-i0 under high thout danger o l be seen that cted 1n 11 may be conheat, and the f impairing by forming y the respective ribs and brick than the other groove is to the other invert the upright edge, and two inclined ribs on the ly to those of anopposite side of the brick, said ribs respecd construction. tively occupying the same positions relaances a rib 8 and a tively to the upright edges as stated in refd on the opposite erence to the grooves. p

f the bricks, as 7. In combination with lateral supports,

in some inst groove 9 may: narrow long shown in Fig.

dinal edges 0 V tting longitudia roof composed of rows of overlapping with nal edges may interlock. The number of. horizontal ribs and grooves on the edges is immaterial.

d to ob- I claim as my invention lower surface, that 1. A roof structure composed of rows of each row on a bricks, each row consisting of verticallyt adjacent row, disposed spaced-apart bricks, the bricks of 1, or adjacent rows overlapping, and such overand hence the oplapping portions having on both sides lonf bricks in the gitudinally extended interlocking wedging d to engage portions for drawing the bricks of each row eing inserte toward the bricks of a previously formed full length, l row, the interlocking portions on both sides Fig. 2. of each brick being parallel.

ve shown the roof made up 2. A roof structure composed of rows of rows; then aseries bricks, each row consisting of verticallya second series of disposed spaced-apart bricks, the bricks of ped rows, adjacent rows overlapping, and each brick by and ribs on the other side paralleling said groove or grooves of the bricks of one row being designed to receive the rib or ribs of the bricks of the next adjacent row.

bricks, each row consisting of verticallydisposed spaced-apart bricks, the bricks of adjacent rows overlapping, and such overlapping portions having throughout their lengths longitudinally extended interlocking wedging portions, the interlocking wedging portions of the bricks of one row diflering in width from the interlocking wedging portions of the bricks of the adjacent row.

4. A roof structure composed of rows of bricks, each row consisting of verticallydisposed spaced-apart bricks, each having on one side throughout its length dia nally arranged longitudinally exten ed grooves, and on the other side, and parallel with the grooves, a corresponding number of ribs, the distance between one edge of the brick and the adjacent rib and groove being greater than the distance between the other edge and the rib and groove adjacent thereto.

5. A brick having a plurality of interlocking parallel ribs and parallel grooves on its opposite sides forming wedging portions of different widths, the interlocking portions on both sides of each brick being parallel.

6. A brick having on one side two parthe nearer to the adjacent upright edge of the 3. A roof structure composed of rowsof v allel inclined grooves, one groove being x 5 lowered Vertically.

bricks set on end; diagonally-arranged inportion being greaterthan that of the co- 10 terlocking portionson the bricks -of each acting-Wedging portion.

row for causing the bricks of a row being Intestimony whereof, I have signed this positioned to move horizontally as they are specification in the presence of two subscribing Witnesses.

roof composed of rows of over- PATRICK SUGRUE.- lapping bri ks set on end and of step-like Witnesses: formation, each brick having interlocking FRANCIS S. MAGUIRE,

wedging portions, the Width of one Wedging JOHN A. MURPHY. 

